The nurse assessing a premature newborn infant auscultates a continuous machinery-like murmur.
This finding is associated with which congenital heart defect?
Pulmonary stenosis
Patent ductus arteriosus
Ventricular septal defect
Coarctation of the aorta
The Correct Answer is B
This is because a patent ductus arteriosus is a congenital heart defect that involves a defect in which the fetal shunt between the aorta and the pulmonary artery fails to close. This causes a continuous machinery-like murmur that can be heard on auscultation.
Choice A is wrong because pulmonary stenosis is a narrowing of the pulmonary valve or artery that obstructs blood flow to the lungs. It causes a systolic ejection murmur that is best heard at the upper left sternal border.
Choice C is wrong because the ventricular septal defect is a hole in the wall between the ventricles that allows blood to flow from the left to the right side of the heart. It causes a loud, harsh holosystolic murmur that is best heard at the left lower sternal border.
Choice D is wrong because coarctation of the aorta is a narrowing of the aorta that reduces blood flow to the lower body. It causes a systolic murmur that radiates to the back and weak or absent femoral pulses.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The correct answer is choice D. Perinatal transmission of HIV is when HIV is passed from a woman with HIV to her child during pregnancy, childbirth, or breastfeeding.
Breast milk from an infected mother can contain HIV and infect the baby.
Choice A is wrong because HIV can be transmitted at any stage of pregnancy, not only in the third trimester.
Choice B is wrong because needlestick injury is not a common mode of perinatal transmission of HIV. It is more likely to occur among health care workers who are exposed to contaminated needles or sharp objects.
Choice C is wrong because HIV can also be transmitted through the ingestion of amniotic fluid, but it is not the only way. Amniotic fluid is the fluid that surrounds and protects the baby in the womb.
Correct Answer is D
Explanation
Therapeutic management includes the administration of gamma globulin and aspirin. This is because Kawasaki disease causes inflammation in the walls of small to medium-sized blood vessels that carry blood throughout the body and can lead to complications such as coronary artery aneurysms. Gamma globulin is an intravenous immunoglobulin that can reduce the risk of these complications, and aspirin can help lower fever and inflammation.
Choice A is wrong because the child’s fever is usually not responsive to antibiotics within 48 hours. Kawasaki disease is not caused by a bacterial infection, so antibiotics are not effective.
Choice B is wrong because the principal area of involvement is not the joints. Kawasaki disease affects mainly the blood vessels, but it can also cause swelling in glands (lymph nodes) and mucous membranes inside the mouth, nose, eyes and throat. Joint pain or swelling may occur, but it is not the main feature of the disease.
Choice C is wrong because aspirin is not contraindicated. Aspirin is part of the standard treatment for Kawasaki disease, along with gamma globulin. However, aspirin should be used with caution and under medical supervision, as it can cause Reye’s syndrome in children with viral infections.
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